Display screen or portion thereof with a graphical user interface for analytics



FIG. 1 is a front view of a display screen or portion thereof with a graphical user interface for analytics showing the new design with environment in broken lines; and,

FIG. 2 is a front view of a display screen or portion thereof with the graphical user interface for analytics showing the new design with additional environment in broken lines.

Within the drawings, the broken lines show the display screen or portion thereof and the portions of the graphical user interface which are excluded from the claim and form no part of the claimed design. 

CLAIM The ornamental design for a display screen or portion thereof with a graphical user interface for analytics, as shown and described. 